Gasket for flexible joints



F. N. BARD.

GASKET FOR FLEXIBLE JOINTS. APPLICATION FILED AUG.6. 1915.

WP/7%? j'ran 0507MB Q20) UNITED STATES PATENT OFFICE.

FRANCIS N. BARD, F HIGHLAND PARK, ILLINOIS. GASKET FOR FLEXIBLE JOINTS.

To all wkom it may concern:

g at of Cook and Highland Park, in the county have invented a certain State of Illinols,

new and useful Improvement in Gaskets for of this description.

out the several fi Flexible Joints, of specification.

his invention relates to improvements 1n which the following is a gaskets for flexible 'joints and has for its ob-' ect to provide a new and improved gasket The invention is illus- 1n the accompanying drawings, wherein p Figure 1 is a sectional view through a flexible joint showing the gaskets invposigaskets 4.

placed in the socket and the outer. gasket 4 is then placed in position and the cap 3 screwed to the casing 2.

It will thus be seen that the gaskets in this case prevent the longitudinal movement of the ball, the outer gasket being held against movement by the cap 3, and the inner gasket being held against movement by the shoulder 5 of the casing 2. It will thus be seen that the gaskets take the pressure of the ball. Each gasket is provided with a curved face 6 which engages the ball. The ends of the gaskets which engage the cap 3 and the shoulder 5 are provided with means for protecting them against 'stortion due to the pressure put upon'them;

As herein shown this protecting Specification of Letters Patent. Application filed August 6, 1915. Serial No.

- and the shoulder 5 and thus device consists of a piece 0 Patented July 20, 1920. 43,996.

metal having three portions 7, Sand 10 at an angle to each other, the metal being embedded in the non-metallic material of the gasket. It will be noted that th device here shown is an these gaskets which bear against the cap 3 he portions 7, 8 and 10 hold these edges in proper position and prevent them from becoming damaged or distorted. Each it will be noted, consists ofa cylindrical piece of non-metallic material having other end of the gasket being of full thickness and having the portions 7 and 8 embedded therein.

claim:

A ball and socket joint comprising a ball, a easing into which said ball is received, a cap for said casing, one or' more molded non metallic gaskets within said gaskets being engaged by said ball, an annular rigid piece having an annular groove extendlng entirely therearound and into which the non metallic gasket is molded, the outer and inner faces of said rigid piece being substantially flush with the outer and inner faces of the gasket.

In testimony whereof, I aflix my si 1n the day of ature presence of two witnesses this 22nd uly, 1915.

FRANCIS N. BARD.

Witnesses ELLA THIEME, Cmusrma Deans.

casing, said 

